Drug interactions
Enalapril-hydrochlorothiazide + Potassium phosphates
Severity: Major
Enalapril-hydrochlorothiazide and Potassium phosphates: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Intravenous potassium phosphate delivers a potassium load, and ACE inhibitors reduce renal potassium excretion. This can lead to hyperkalemia with arrhythmias, especially in renal impairment. The thiazide component partly offsets potassium retention but not reliably.
What this interaction means in plain words
Enalapril-hydrochlorothiazide and Potassium phosphates can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive increases in serum potassium from exogenous potassium and ACE inhibitor-induced reduction in aldosterone-mediated potassium excretion.
What to do
Monitor serum potassium and renal function closely during and after infusion, and reduce or slow the potassium dose in patients with renal impairment.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Enalapril-hydrochlorothiazide
- Aliskiren + Enalapril-hydrochlorothiazide Contraindicated
- Dofetilide + Enalapril-hydrochlorothiazide Contraindicated
- Enalapril-hydrochlorothiazide + Protein a column Contraindicated
- Enalapril-hydrochlorothiazide + Sacubitril / valsartan Contraindicated
- Amifostine + Enalapril-hydrochlorothiazide Major
- Amiloride + Enalapril-hydrochlorothiazide Major
Frequently asked questions
Can I take Enalapril-hydrochlorothiazide with Potassium phosphates?
MediHelp rates the interaction as major. Enalapril-hydrochlorothiazide and Potassium phosphates can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Intravenous potassium phosphate delivers a potassium load, and ACE inhibitors reduce renal potassium excretion. This can lead to hyperkalemia with arrhythmias, especially in renal impairment. The thiazide component partly offsets potassium retention but not reliably.
How serious is the interaction between Enalapril-hydrochlorothiazide and Potassium phosphates?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and renal function closely during and after infusion, and reduce or slow the potassium dose in patients with renal impairment.
What other medicines interact with Enalapril-hydrochlorothiazide?
MediHelp also lists interactions of Enalapril-hydrochlorothiazide with, for example, Aliskiren, Dofetilide, Protein a column. The full list is on the Enalapril-hydrochlorothiazide page.
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